Device for pressure dyeing textile samples



April 23, 5 J. M. A. BLANCAFORT 3,379,038

DEVICE FOR PRESSURE DYEING TEXTILE SAMPLES Filed Jan. 13, 1966 11/[If/II I/ United States Patent 3 Claims. (a. 68-156) Jos Maria ABSTRACTOF THE DISCLOSURE A dyeing device in which a sample holder is positionedin a receptable containing a dyeing bath and is connected to a magneticcore which is magnetically coupled to an external magnetic element, anactuator mechanism being provided for acting on the receptacle or theexternal magnetic element to move the same while the other remainsstationary.

This invention relates to an apparatus for pressure dyeing textilesamples, particularly for dyeing textile samples made of modernsynthetic fibres where it is required to work at bath temperatures above100 0; since this kind of temperature cannot be provided in an openbath, dyeing must be performed under pressure in a closed bath.

The device according to the invention has been devised for pressuredyeing of this kind. The device according to the invention is of usemore particularly in apparatus having means for vertically reciprocatingthe samples to be dyed in order to produce repeated immersion of thesamples in their respective open dye baths. According to the invention,the dyeing device comprises an autoclavelike receptacle in whoseinterior are disposed the dye baths, the textile sample and means forvertically reciprocating the same in and relative to the dye bath. Thevertically reciprocating agitation of the textile sample is produced bymagnetic means which act from outside the receptacle upon a magneticcore mounted to be freely movable inside the receptacle, the core havingfitted to it a holder for bearing the textile article being dyed.

Preferably, the vertical reciprocation is communicated to the magneticcore disposed inside the receptacle to the magnetic core disposed insidethe receptacle by an alternating movement of equal amplitude of theexternal magnetic means, the receptable being rigidly connected to theframe of the machine in which the device is used. In another form of theinvention, the vertical reciprocation is communicated to the receptacleand therefore to the bath by the action of the external magnetic means,the magnetic core which is received in the bath remaining floating. Theexternal means can be permanent magnets or electromagnets.

A description will now be given of several embodiments of the invention,reference being made to the accompanying explanatory drawings wherein:

FIG. 1 is a view in vertical section of a complete textile sample dyeingapparatus including the device according to this invention;

FIG. 2 is a diagrammatic view in section of a pressure dyeing apparatusin which the receptable is stationary and the material holder moves, and

FIG. 3 is a view in vertical section of a part of the machine similar tothat shown in FIG. 1, including a dyeing apparatus in which thereceptacle is adapted to move and the material holder is stationary.

The dyeing apparatus comprises a frame 1 receiving a vessel 2 with acover 3, a heating device 4, a thermostat 5, a thermometer 6, a motor 7,an actuating mechanism 8 and a dyeing device 9. The vessel 2 has heatinsulation 10, a central column 11, a drain tube 12 and an overflow 13for removing excess liquid, such as glycerin, ethylene glycol and thelike, heated by the device 4. The thermostat 5 and thermometer 6 senseand control the temperature of the liquid. The heating device 4 iscontrolled by means of electric resistors 14 received in a protectiveinsulating sheath 15. A control box 16 is provided for starting themotor 7 and controls the electrical components of the apparatus.

The actuating mechanism 8 comprises a tubular rod 17 and a central core18. The rod 17 is connected to the end of a rod 19 operated by aneccentric pivot of a disc 20 operated by the motor 7, so that the rod 17is reciprocated vertically. The vertical reciprocation is imparted tothe other elements of the mechanism when in the coupled state. Radialarms 21 extend from the top end of the tubular rod 17, and extendingfrom the arms 21 are rods 22 rigidly connected to agitators 23 movingmoving in the liquid in the vessel 2.

A disc 24 is rigidly connected to the central core 18; extending fromthe disc 24 are arms 25 to whose outer ends dyeing devices 9 are fitted.

Each device 9 comprises an autoclave-like receptacle 26 connected to acover 27 from which a tubular extension 28 extends so that theconnection between the cover 27 and the receptacle 26 is effected withinsertion of the edge of an orifice in the cover 3 of the vessel 2.Disposed inside the receptacle 26, which contains a dyestuif, is amaterial holder or support member in the form of a per forate receptacle29 suspended on a rod 30 capped at the top by a magnetic core 31. Whenattracted by a permanent magnet or electromagnet 32 dis-posed at the endof one arm 25, the core 31 moves vertically inside the extension 28, sothat movements of the arm 25 which are produced by the actuatingmechanism 8 lead to equal movements of the receptacle 29 in thedyestulf. The receptacle 29 is very well suited to receiving textilefibres on a rack, but instead a holder 33 for a hank 33a or a hook 34for retaining a cloth piece 35 can be used.

The rods 30 are guided by means of a perforate parti- -tion 36 disposedinside the extensions 28 and by an aperture for the rods 30 in thecovers 27.

Alternatively, the devices 9 take the form of autoclavelike receptacles37 (FIG. 3) which contain the dyestuif and from which extend extensions38 so coupled with the radial arms 25 that the receptacles 37 aremovable. Material holders of any of the three kinds hereinbeforereferred to (29 in FIG. 1, 33 in FIG. 2 and 34 in FIG. 3) may bedisposed in the receptacles 37 and connected to rods 30 whose top endhas a magnetic core 40. Outside the extensions 38 a magnetic element,such as a permanent magnet 41 or an electromagnet, is disposed and isconnected to stationary support members 42 for retaining the rods 39 inposition. In this case, therefore, the material holder is stationary.The rods 39 are prevented from moving laterally by guides 43 connectedto the extension 38.

In both the alternatives described, although they operate in oppositemanner, there is relative movement between the dyestuff-containingreceptacles and the material holders receiving the textiles to be dyed;the results in either case are, therefore, the same.

The invention can be varied in detail as found advis able in the lightof experiment and practice provided that such variations do not alterits main features as set forth in the following claims.

What I claim is:

1. In an apparatus for pressure dyeing textile samples, a dyeing devicecomprising an autoclave-like receptacle containing a dye bath, a holderin said receptacle for a textile sample, and magnetic means forvertically reciprocating said sample into and relative to the dye bath,said magnetic means comprising an external magnetic element disposedoutside the receptacle, a magnetic core freely suspended in thereceptacle and in magnetic coupling relation with the magnetic elementto be supported thereby, said holder being secured to said core, andactuating means for producing relative reciprocal movement between thereceptacle and the external magnetic element such that the magneticcoupling between the core and the external magnetic element results inrelative reciprocal movement of the receptacle with the core and therebywith the sample.

2. A device as claimed in claim 1 wherein said receptacle is rigidlysecured to a stationary frame, and said actuating means is coupled tothe external magnetic element to reciprocally move the same.

References Cited UNITED STATES PATENTS 2,303,940 12/1942 Kuhn 68-4312,700,883 2/1955 Jacobs 68170 X 2,776,558 1/1957 Vang 68131 X 2,901,9029/1959 Horsfall 68-170 FOREIGN PATENTS 1,024,448 1/ 1953 France.

WALTER A. SCHEEL, Primary Examiner.

